How to Sterilize Pf Tek Jars to Use Again
#i 
chill
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celtic tiger
Posted 03 February 2007 - 03:26 AM
No one e'er talks nearly steralizing jars in the oven. Steaming sure, PC of grade, only never the oven. Why is that?
A couple of grows agone my stainless steel pot I use for steaming sprung a leak in the middle of 36 jars worth of work. So I popped the remainder in the oven at 225F for 45 minutes and had great results.
Next grow I did the same and also had smashing results.
Why aren't more than people doing this? Y'all can easily put twoscore jars in an oven and in that location is no boosted cost or mess every bit compared to a steamer or a PC.
Feedback anyone?
#2
cheshire
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Holding Tank
Posted 03 Feb 2007 - 04:27 AM
good thought, steamer ever is effort plus if stealth is needed can exist then suspect, and every1 knows how to use an oven properly :)
gonna endeavour for adjacent grow
#3
lsd kid
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Posted 03 Feb 2007 - 06:xiii AM
can you lot tell the states about what kinda jars u used....normal 1/2 pint pf jars in the oven ? ive heard ovens dont work well and jars oft crack?....if their is a good fashion to exercise it im very interested as my p/c is shit.
#four
golly
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modapotato
Posted 03 February 2007 - 08:12 AM
The moisture is gonna boil off in the oven ...The higher y'all go above 212F ,the faster they will dry out out...
The PC traps that wet and a steamer keeps the temp at the threashold value of 212 which ways , whatsoever loss of moisture occurs very slowly..
The low oven temp u had Chill, may accept been low enough that not too much
water was lost ...
#5
meatwad
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Mycophage
Posted 03 Feb 2007 - 01:52 PM
The moisture is gonna boil off in the oven ...The higher yous get to a higher place 212F ,the faster they will dry out...
The PC traps that moisture and a steamer keeps the temp at the threashold value of 212 which means , whatever loss of moisture occurs very slowly..The depression oven temp u had Chill, may accept been low enough that not too much
water was lost ...
Ya like golly said
However I wounder about your steaming methods, do y'all have luck with steaming stacked jars?
I tried stacking jars while steaming, 90 minute steam sessions, and my top jars always failed..
My jars that were halfway submersed in water yet, have e'er turned out GREAT
I pressure cook now though, so no worries
#6
chill
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celtic tiger
Posted 03 Feb 2007 - 05:23 PM
The moisture is gonna boil off in the oven ...The higher you go above 212F ,the faster they will dry out...
The PC traps that wet and a steamer keeps the temp at the threashold value of 212 which ways , any loss of wet occurs very slowly..The low oven temp u had Chill, may accept been depression enough that not too much
water was lost ...
Hi Golly,
that's what I figured too then I never tried it until I had to. Doesn't seem to be an issue. Hither's a pic of why I think the h2o doesn't boil off. The metal band over the foil traps the moisure, that and the depression temps.
Attached Thumbnails
#vii
chill
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celtic tiger
Posted 03 February 2007 - 05:29 PM
I wounder about your steaming methods, practise you have luck with steaming stacked jars?
I tried stacking jars while steaming, xc minute steam sessions, and my top jars e'er failed..
My jars that were halfway submersed in water however, have e'er turned out GREAT
Excellent results with steaming. I ditched my PC as an unnecessary expense. PF cakes work great for spawn so no need to use PCs for grains.
I would raise my jars off the bottom of the steamer past placing a row of upside down, empty, one/2 pint jars on a dish cloth. And then I'd fill with h2o to the tops of the upside downwardly jars. Then I'd put in my PF jars. That way I'd accept enough of water and not worry so much virtually boiling dry. I would take to add water 1/2 way through tho.
I'd also do information technology at a rolling boil the whole manner through. I'd also weight the hat down and then that more pressure inside was required to forcefulness the steam out.
worked smashing.
#8
malefacter
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:P
Posted 03 Feb 2007 - 05:35 PM
iv ben thinking of using my season wave convection oven it uses Inferred for its estrus sorce i love cooking with it
#9
golly
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modapotato
Posted 03 February 2007 - 05:38 PM
Wondering if you used an oven thermometer for the temp or just dialed into that number..?..Some tin can vary quite a bit from the setting....
If you could boom downward a specific method that works for u, That could be quite helpfull to many...
I would be interested to know what the deviation in the weight of the jars are earlier and later on gett'n broiled...:rasta:
#10
Lazlo
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old manus
Posted 03 February 2007 - 08:26 PM
I recall there's a lot of potential in using an oven for sterilizing jars besides. I've tried it with whole grain and came close to getting it right. I may endeavor a few more than jars presently only to come across if I tin come upward with something sound.
#eleven
eternalfrost
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Mycotopiate
Posted 03 February 2007 - 08:39 PM
the dry heat of an oven drys ur poor jars out. if doing PF-tek merely throw them in a normal pot with water on the range (no 'steamer' needed) . simply as piece of cake and 'stealthy' and cheap as an oven but with no worries.
a pressure cooker isnt suspicious anyway. and if your worried it is, then but larn how to employ it to cook come food. makes bully food existent quick if you know what your doing.
#12
Hippie3
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DUNG DEALER
Posted 03 February 2007 - 08:41 PM
a jar with foil nether the lid similar that
would seem prone to two issues-
lack of good air exchange
and wet vermiculite barrier,
both problems would seem to
make the foil less than optimum,
i wonder how much drying would occur
in simply 45 minutes
without the foil under the lid,
over it instead would seem better
in that once washed it can be removed
without risking breaching sterility
so air can become in
and the lid area tin dry out after steaming.
#13
chill
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celtic tiger
Posted 03 February 2007 - 09:03 PM
a jar with foil under the lid like that
would seem prone to ii issues-
lack of good air exchange
and wet vermiculite barrier,
The foil is under the ring, the lid is under the foil.
Also, the foil under the ring was really used to prevent wet jars when using the steaming / boiling method in a stock pot. Makes for a tighter seal than an elastic around the foil. I assume it also prevents moisture from humid off although I don't know that for a fact.
After steralization the foil is removed and the jars are treated like regular PF tek jars and then at that place is no consequence with air exchange. As for wet verm, since they are in the oven the risk is most probable to exist that the jars are too dry rather than too wet.
Finally, every bit to boiling off the water, I can say that it doesn't happen. I'm on my 2d batch and the jars are performing as per normal. I've got the shrooms to prove information technology.
Important: wetter jars are a bigger adventure than drier jars equally spores will germinate if a little as well dry out simply won't germinate if a picayune too wet. I went thru many syringes dorsum in the 24-hour interval figuring that tidbit out when I was kickoff learning to use a stock pot for steralization :(
#14
chill
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celtic tiger
Posted 03 February 2007 - 09:07 PM
just throw them in a normal pot with water on the range (no 'steamer' needed) . just as easy and 'stealthy' and inexpensive as an oven just with no worries.
This will non work as described IMHO. I have dozens of abound attempts (some successful others not) based on the steaming of jars and feel quite confident equally to what will work and what won't.
Steaming requires certain parts of the procedure to be simply correct or the jars will get wet and not germinate.
Humid of jars is too risky equally water will arrive when the jar is submerged. Water expands when boiling and will hands swamp a jar that is just partially submerged prior to boiling.
#15
Hippie3
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DUNG DEALER
Posted 03 February 2007 - 09:08 PM
where are the pictures friend ?
#16
Hippie3
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DUNG DEALER
Posted 03 February 2007 - 09:xi PM
This will not work as described IMHO. I accept dozens of grow attempts (some successful others not) based on the steaming of jars and feel quite confident equally to what will work and what won't.
Steaming requires certain parts of the process to be just right or the jars will get wet and not germinate.
Boiling of jars is too risky as water will make it when the jar is submerged. H2o expands when boiling and volition easily swamp a jar that is only partially submerged prior to boiling.
only a problem if i doesn't drag the jars,
common in modest units that don't hold much water.
merely a bigger pot and something nether the jars
easily solves this 'problem'
so that steaming is certainly a viable culling for pf tek,
as has been proved many times before.
simply the oven is a decent alternative, information technology seems, for pf tek
although i doubt ane would get away with it
doing grain
#17
arctic
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celtic tiger
Posted 03 Feb 2007 - 09:31 PM
only a problem if i doesn't elevate the jars,
common in small units that don't concur much water.
but a bigger pot and something under the jars
easily solves this 'problem'
so that steaming is certainly a viable alternative for pf tek,
as has been proved many times before.
but the oven is a decent alternative, it seems, for pf tek
although i doubt one would get abroad with information technology
doing grain
Elevation is critical. My reply to the above post was to prevent people from thinking they could just puts some jars in pots and boil away. There'due south more to it than that. Steaming really deserves its own tek or write up.
I'm not sure the oven would work for grains like popcorn. I don't know at what temperature the endospore die and grains seem to have longer to 'melt' than do jars pregnant that the water loss would be greater.
Fortuantely grains aren't necessary to be successful in this hobby then spending $200.00 + shipping on an All American PC is strictly optional.
#18
Lazlo
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onetime hand
Posted 03 February 2007 - 09:31 PM
I remember when doing the whole grain jars that; when the jars began to cool down, there was a considerable amount of moisture still inside of the jars. The grain looked really nice later a consummate cooling and a few shakings to disperse the wet evenly throughout the grain. I think my master problem with that thread was an old liquid culture.
I'd accept to call back that moisture loss would be minimal considering the moisture's contained and only has a small corporeality of space to escape (inoculation holes, exc.).
#19
Hippie3
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DUNG DEALER
Posted 03 February 2007 - 09:34 PM
spending $200.00 + shipping on an All American PC is strictly optional.
true enough, pf 'south genius made all that 'optional',
if all ane wants is the magic
it doesn't require much more than than
items found in almost every kitchen.
#20
Travesty
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Mycophiliac
Posted 03 February 2007 - 10:17 PM
i tried to use a dishwasher on my get-go try. I ran 40 pf jars thru 2 cycles. everything worked well. so the 2d time 1/ii failed. now i use a pc. with a 99% success rate.(the 1% is my own abandon). I alwas thought an oven would crack my jars, cause one time my pc's seal broke and all the water steamed out cracking all the jars inside.
maybe it would help to give them a hot water bathroom while in the oven. (baking dish west/ water and jars in the water) to prevent cracking. just a thought
Source: https://mycotopia.net/topic/14883-oven-sterilization-of-pf-jars/
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